The ANSI/ASME B31G guideline has been useful to pipeline operators in assessing the integrity of corroded line pipe. Because large safety margins have had to be incorporated, the guidelines can be excessively conservative, which in turn can force costly repairs and replacements that may not actually be necessary. On the other hand, because the current guidelines consider only pressure loading and neglect bending and axial compression, they could give nonconservative failure predictions when combined loading exists. Therefore, a study was initiated to develop a theoretically sound methodology for assessing the integrity of corroded line pipe subjected to combined loading. A key step in the successful application of this methodology is the development of a sophisticated three-dimensional finite element procedure that can accurately simulate full-scale pipe tests under conditions of combined loading. This paper describes thirteen full-scale failure tests on artificially corroded pipes subjected to simultaneous internal pressure, bending, and longitudinal compression and presents a detailed account of the finite element analysis procedure that was developed to simulate these tests numerically. Additional finite element analyses that were conducted to investigate the effect of key parameters on failure, and to expand the corroded pipe failure database, are also discussed.

Issue Section:
Research Papers
Topics:
Computer simulation, Pipes, Failure, Finite element analysis, Compression, Pressure, Databases, Maintenance, Pipelines, Safety
1.
Brazier
L. G.
,
1927
, “
On the Flexure of Thin Cylindrical Shells and Other ‘Thin’ Sections
,”
Proceedings of the Royal Society, Ser. A
, Vol.
116
, p.
104
104
.
2.
Bubenik, T. A., Olson, R. J., Stephens, D. R., and Francini, R. B., 1992, “Analyzing the Pressure Strength of Corroded Line Pipe,” 11th International Conference of Offshore Mechanics and Arctic Engineering, Calgary, Canada, ASME OMAE-Vol. V-A, pp. 225–231.
3.
Chouchaoui, B. A., Pick, R. J., and Yost, D. B., 1992, “Burst Pressure Predictions of Line Pipe Containing Single Corrosion Pits Using the Finite Element Method,” 11th International Conference of Offshore Mechanics and Arctic Engineering, Calgary, Canada, ASME OMAE-Vol. V-A, pp. 203–210.
4.
Chouchaoui, B. A., and Pick, R. J., 1993, “Interaction of Closely Spaced Corrosion Pits in Line Pipe,” 12th International Conference of Offshore Mechanics and Arctic Engineering, Glasgow, Scotland, ASME OMAE-Vol. V, pp. 203–214.
5.
Chouchaoui, B. A., and Pick, R. J., 1994, “A Three Level Assessment of the Residual Strength of Corroded Line Pipe,” 13th International Conference of Offshore Mechanics and Arctic Engineering, Houston, TX, ASME OMAE-Vol. V, pp. 9–18.
6.
Emery
A. F.
,
Chao
Y. H.
,
Kobayashi
A. S.
, and
Love
W. J.
,
1992
, “
Numerical Modeling of Full-Scale Pipe Rupture Tests
,”
ASME JOURNAL OF PRESSURE VESSEL TECHNOLOGY
, Vol.
114
, Aug., pp.
265
–
270
.
7.
Hibbitt, Karlson and Sorenson, 1988, ABAQUS User’s Manual, Hibbitt, Karlson and Sorenson, Inc., Providence, RI.
8.
Jones, D. G., Turner, T., and Ritchie, D., 1992, “Failure Behavior of Internally Corroded Line Pipe,” 11th International Conference of Offshore Mechanics and Arctic Engineering, Calgary, Canada, ASME OMAE-Vol. A, pp. 219–224.
9.
Kiefner, J. F., and Vieth, P. H., 1993, “The Remaining Strength of Corroded Pipe,” Eighth Symposium on Line Pipe Research, Paper No. 29, American Gas Association, Arlington, VA.
10.
Klever, F. J., 1992, “Burst Strength of Corroded Pipe: “Flow Stress” Revisited,” Proceedings of 24th Annual Offshore Technology Conference, Houston, TX, pp. 417–431.
11.
Lubliner, J., 1990, Plasticity Theory, Macmillan Publishing Company, New York, NY.
12.
Mok
D. H. B.
,
Pick
R. J.
,
Glover
A. G.
, and
Hoff
R
,
1991
, “
Bursting of Line Pipe with External Corrosion
,”
International Journal of Pressure Vessels and Piping
, Vol.
46
, pp.
195
–
216
.
13.
Mroz
Z
,
1967
, “
On the Description of Anisotropic Work Hardening
,”
Journal of Mechanics and Physics of Solids
, Vol.
15
, pp.
163
–
175
.
14.
Riks
E.
,
1987
, “
Progress in Collapse Analysis
,”
ASME JOURNAL OF PRESSURE VESSEL TECHNOLOGY
, Vol.
109
, pp.
33
–
41
.
15.
Roy, S., Kanninen, M. F., Grigory, S. C., Couque, H. R. A., and Smith, M. Q., 1994, “The Development of Methodologies for Determining the Integrity of Corroded Pipelines,” Phase-III Final Report to Alyeska Pipeline Service Company, SwRI Project No. 07-3758, Vol. I, Feb.
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